Floating Circuit Board Connector Structure for Terminal Resonance Control
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Solution Overview
Problem
Existing circuit board electrical connectors experience resonance and potential damage due to excessive deformation of terminals when vibration frequencies approach their natural frequency, leading to plastic deformation.
Innovation Solution
The circuit board electrical connector design includes terminals with a fixed side held portion, a movable side held portion, and an elastically deformable intermediate portion, where a specific elastic portion abuts on the housing or side walls when deformed by a predetermined amount, restricting further deformation and increasing the natural frequency to prevent resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal is designed with elastic portions to enable floating movement, then the connector can absorb vibration and maintain electrical contact, but the terminal may undergo excessive deformation and plastic deformation when vibration frequency approaches natural frequency
Solution Approach 1:
The patent applies dynamics by making the housing movable relative to the fixed housing, allowing the terminal to dynamically adjust its position in response to vibrations. The movable housing can shift to absorb vibrational energy, preventing the terminal from experiencing excessive static stress while maintaining electrical contact stability.
Solution Approach 2:
The patent changes the physical parameters of the terminal by modifying the elastic portion's geometry (making it bent in the connector height direction) and adjusting its position. This parameter change alters the terminal's natural frequency and deformation characteristics, enabling it to withstand vibration without plastic deformation.
2Adaptability or versatility
If the elastic portion is positioned to allow floating in the connector width direction, then the connector can accommodate misalignment and vibration, but the terminal becomes more susceptible to resonance when vibration frequency matches natural frequency
Solution Approach 1:
The patent changes the geometric parameters of the elastic portion by bending it in the connector height direction and positioning it between the fixed and movable housings. This parameter modification alters the terminal's natural frequency and deformation characteristics, enabling it to withstand vibration without plastic deformation.
Solution Approach 2:
The patent applies dynamics by making the housing movable relative to the fixed housing, allowing the terminal to dynamically adjust its position in response to vibrations. The movable housing can shift to absorb vibrational energy, preventing the terminal from experiencing excessive static stress while maintaining electrical contact stability.
3Ease of manufacture
If the terminal structure is simplified with plate-shaped terminals, then manufacturing is easier and cost is reduced, but the terminal lacks sufficient deformation control to prevent resonance damage
Solution Approach 1:
The patent changes the geometric parameters of the elastic portion by bending it in the connector height direction and positioning it between the fixed and movable housings. This parameter modification alters the terminal's natural frequency and deformation characteristics, enabling it to withstand vibration without plastic deformation.
Solution Approach 2:
The patent segments the terminal into distinct functional portions: a fixed side held portion, a movable side held portion, and an intermediate elastic portion. This segmentation allows each part to perform its specific function while maintaining overall structural integrity and resistance to resonance damage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design effectively suppresses resonance and reduces the likelihood of terminal damage by limiting excessive deformation, ensuring sufficient floating capacity and maintaining connector functionality.
Implementation Method 1
the intermediate portion includes at least one of elastic portions bent in a connector height direction, and a specific elastic portion of the elastic portions can abut on the fixed housing when being elastically deformed by a predetermined deformation amount
Data Source
AI summary
A circuit board electrical connector includes: a plurality of terminals; a fixed housing fixed to a circuit board via the terminals; and a movable housing relatively movable with respect to the fixed housing, in which the terminals are provided to be bridged between the fixed housing and the movable housing, the terminals include a fixed side held portion held by the fixed housing, a movable side held portion positioned on an inner side in a connector width direction than the fixed side held portion and held by the movable housing, and an elastically deformable intermediate portion positioned between the fixed side held portion and the movable side held portion, the intermediate portion includes at least one of elastic portions bent in a connector height direction, and a specific elastic portion of the elastic portions can abut on the fixed housing when being elastically deformed by a predetermined deformation amount.